Miscellaneous. 147 



NOTICE RESPECTING AMPBIPEPLEA GLUTINOS/I. 



M. Troschel lately read an account before the Society Der Natur- 

 forschender Freunde in Berlin, of the examination in which he had 

 been engaged of Amphipeplea glutinosa, Nilss. (LimncEus* glutinosus, 

 Drap.) recently found in the neighbourhood of Berlin. He had ac- 

 curately examined the tongue and other mouth-parts, and found that 

 from these, as well as from the structure of the mantle and nervous 

 system recently described by M. Vanbeneben, it deserves to form a 

 distinct genus, and to be separated from Limnceus and Physa. Am- 

 phipeplea agrees with the former genus in the structure of the an- 

 tennae, of the foot, and in the position of the respiratory, anal, and 

 sexual aperture on the right side ; with the latter, in the absence of 

 lateral maxillae, and also from the tongue being provided with ser- 

 rated teeth. There is therefore between the genera Physa and Lim- 

 ncBus a twofold transition, — one through the genus Planorbis, the se- 

 cond through Amphipeplea. I propose therefore the following schema 

 for the family of the water Pulmonata, 



I. An upper maxilla, serrated teeth on the tongue, the mantle ge- 

 nerally folding over the shell. Animal active, lively. 



1. Antennae filiform; foot posteriorly acuminate; respiratory, 

 anal, and sexual aperture on the left side. Physa. 



2. Antennae triangular; foot posteriorly rounded; respiratory, 

 anal, and sexual aperture on the right side. Amphipeplea. 



II. An upper and two side maxillae, simple conical teeth on the 

 tongue, mantle not folding over the shell. Animal inactive. 



3. Antennae filiform; foot posteriorly acuminate; respiratory, 

 anal, and sexual apertures on the left side. Planorbis. 



4. Antennae triangular; foot posteriorly rounded; respiratory, 

 anal, and sexual apertures on the right side. LiMNiBUS, 



ON PIN us PUMILIOj HK. BY PROFESSOR GOEPPERT. 



There are still botanists who regard the Dwarf Pine as a mere form 

 of Pinus sylvestris produced by the elevated habitat. The present 

 notice of an experiment made with seed will perhaps not be without 

 interest, and tend to refute this, in my opinion, erroneous view. 



In 1828 M. Beinert of Charlottenbrunn in Silesia procured some 

 ripe cones of P. Pumilio from the Riesengebirge, together with some 



• A multitude of needless synonyms burthen the descriptions of this 

 genus, because concliologists cannot agree as to its oithograpliy : — LimtKBus, 

 Lymnaus, Lymneus, ^c. We believe the chissical autiiority of Dr. Goodall, 

 - whose loss we have to deplore, was decidedly in favour of Lituneus. — Ed. 



